SENS

SEC source: 0001104659-21-049878 · tm2112899d1_4.xml · nonDerivative · entry 4

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 652

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on March 10, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $2.02 to $2.37, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Shares held directly by Delphi BioInvestments VIII, L.P. ("DBI VIII"). The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of DBI VIII. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by DBI VIII and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by DBI VIII, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001104659-21-049878 · tm2112899d1_4.xml · nonDerivative · entry 3

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on March 10, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $2.02 to $2.37, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: Shares held directly by Delphi Ventures VIII, L.P. ("DV VIII"). The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of DV VIII. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by DV VIII and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by DV VIII, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001104659-21-049878 · tm2112899d1_4.xml · nonDerivative · entry 2

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 48,232

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on March 10, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $2.30 to $2.565, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Shares held directly by Delphi BioInvestments VIII, L.P. ("DBI VIII"). The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of DBI VIII. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by DBI VIII and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by DBI VIII, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001104659-21-049878 · tm2112899d1_4.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 4,845,399

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on March 10, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $2.30 to $2.565, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: Shares held directly by Delphi Ventures VIII, L.P. ("DV VIII"). The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of DV VIII. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by DV VIII and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by DV VIII, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-21-025217 · doc4.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,218,601

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $18,779.82 divided by $2.58, the closing price of Issuer's common stock on the NYSE American on April 1, 2021.

SEC source: 0001209191-21-025208 · doc4.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 442,875

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $12,747.78 divided by $2.58, the closing price of Issuer's common stock on the NYSE American on April 1, 2021.

SEC source: 0001209191-21-025192 · doc4.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 368,334

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $7,531.02 divided by $2.58, the closing price of Issuer's common stock on the NYSE American on April 1, 2021.

SEC source: 0001209191-21-025193 · doc4.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 369,186

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $6,372.60 divided by $2.58, the closing price of Issuer's common stock on the NYSE American on April 1, 2021.

SEC source: 0001209191-21-025214 · doc4.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 429,275

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $11,873.16 divided by $2.58, the closing price of Issuer's common stock on the NYSE American on April 1, 2021.

SEC source: 0001209191-21-002362 · doc4.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,211,322

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $18,780.74 divided by $0.9302, the closing price of Issuer's common stock on the NYSE American on January 4, 2021.

SEC source: 0001209191-21-002367 · doc4.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 365,415

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $7,530.90 divided by $0.9302, the closing price of Issuer's common stock on the NYSE American on January 4, 2021.

SEC source: 0001209191-21-002364 · doc4.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 437,934

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $12,749.32 divided by $0.9302, the closing price of Issuer's common stock on the NYSE American on January 4, 2021.

SEC source: 0001209191-21-002365 · doc4.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 366,716

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $6,374.66 divided by $0.9302, the closing price of Issuer's common stock on the NYSE American on January 4, 2021.

SEC source: 0001209191-21-002363 · doc4.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 424,673

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $11,874.93 divided by $0.9302, the closing price of Issuer's common stock on the NYSE American on January 4, 2021.

SEC source: 0001209191-21-036392 · doc4.xml · nonDerivative · entry 1

Panlilio Mirasol · CIK 0001667551 · VP Global Sales and Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 836,483

F1 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units ("RSUs").

SEC source: 0001209191-21-036388 · doc4.xml · nonDerivative · entry 1

Goodnow Timothy T · CIK 0001667588 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,962,421

F1 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units ("RSUs").

SEC source: 0001209191-21-036390 · doc4.xml · nonDerivative · entry 1

JAIN Mukul · CIK 0001667593 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,648,096

F1 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units ("RSUs").

SEC source: 0001209191-21-036391 · doc4.xml · nonDerivative · entry 1

Kaufman Francine · CIK 0001769791 · Director · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 933,153

F1 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of restricted stock units ("RSUs").

SEC source: 0001209191-20-053857 · doc4.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,191,132

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $18,781 divided by $0.3893, the closing price of Issuer's common stock on the NYSE American on October 1, 2020.

SEC source: 0001209191-20-053859 · doc4.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 424,228

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $12,749.96 divided by $0.3893, the closing price of Issuer's common stock on the NYSE American on October 1, 2020.

SEC source: 0001209191-20-053862 · doc4.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 357,319

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $7,531.01 divided by $0.3893, the closing price of Issuer's common stock on the NYSE American on October 1, 2020.

SEC source: 0001209191-20-053861 · doc4.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 359,863

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $6,374.79 divided by $0.3893, the closing price of Issuer's common stock on the NYSE American on October 1, 2020.

SEC source: 0001209191-20-053858 · doc4.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 411,907

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $11,874.82 divided by $0.3893, the closing price of Issuer's common stock on the NYSE American on October 1, 2020.

SEC source: 0001209191-20-053863 · doc4.xml · nonDerivative · entry 1

Raab Anthony R. · CIK 0001827192 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 293,077

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on October 1, 2021, subject to the reporting person's continuous service through such vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043335 · doc4.xml · nonDerivative · entry 2

Panlilio Mirasol · CIK 0001667551 · VP Global Sales and Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 876,064

F3 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of RSUs.

SEC source: 0001209191-20-043329 · doc4.xml · nonDerivative · entry 2

Goodnow Timothy T · CIK 0001667588 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,117,932

F3 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of RSUs.

SEC source: 0001209191-20-043330 · doc4.xml · nonDerivative · entry 2

JAIN Mukul · CIK 0001667593 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,825,135

F3 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of RSUs.

SEC source: 0001209191-20-043333 · doc4.xml · nonDerivative · entry 2

Kaufman Francine · CIK 0001769791 · Director · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 977,446

F3 · shares: Represents shares withheld to satisfy withholding tax obligations upon the vesting of RSUs.

SEC source: 0001209191-20-043335 · doc4.xml · nonDerivative · entry 1

Panlilio Mirasol · CIK 0001667551 · VP Global Sales and Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 913,043

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043329 · doc4.xml · nonDerivative · entry 1

Goodnow Timothy T · CIK 0001667588 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,273,969

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043330 · doc4.xml · nonDerivative · entry 1

JAIN Mukul · CIK 0001667593 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,902,174

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043328 · doc4.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 391,477

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043326 · doc4.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,142,889

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043336 · doc4.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,974

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043420 · doc4.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 273,077

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043334 · doc4.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 343,488

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043333 · doc4.xml · nonDerivative · entry 1

Kaufman Francine · CIK 0001769791 · Director · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,021,739

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-043327 · doc4.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 381,404

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in eight equal installments with the first installment vesting on July 21, 2020 and the remaining RSUs vesting in six month increments commencing on November 15, 2020, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047741 · doc4a.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,142,889

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047744 · doc4a.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 391,477

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047747 · doc4a.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,974

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047750 · doc4a.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 273,077

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047743 · doc4a.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 381,404

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-047745 · doc4a.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 343,488

F1 · shares: Represents a restricted stock unit ("RSU") grant. The RSUs vest in full on the earlier of the one year anniversary of the date of grant or the next annual stockholders meeting, subject to the reporting person's continuous service through such vesting date.

F2 · shares: This Form 4 amendment is being filed to reflect the correct vesting terms of the RSU grant.

F3 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001209191-20-040418 · doc4.xml · nonDerivative · entry 1

DeFalco Stephen P · CIK 0001666964 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 869,812

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $18,781.09 divided by $0.3771, the closing price of Issuer's common stock on the NYSE American on July 1, 2020.

SEC source: 0001209191-20-040464 · doc4.xml · nonDerivative · entry 1

Fiorentino Edward · CIK 0001666972 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,400

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $12,749.75 divided by $0.3771, the closing price of Issuer's common stock on the NYSE American on July 1, 2020.

SEC source: 0001209191-20-040450 · doc4.xml · nonDerivative · entry 1

Prince Douglas S · CIK 0001666995 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,897

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $7,531.06 divided by $0.3771, the closing price of Issuer's common stock on the NYSE American on July 1, 2020.

SEC source: 0001209191-20-040586 · doc4.xml · nonDerivative · entry 1

Klein Peter Justin · CIK 0001608710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,411

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $6,374.88 divided by $0.3771, the closing price of Issuer's common stock on the NYSE American on July 1, 2020.

SEC source: 0001209191-20-040432 · doc4.xml · nonDerivative · entry 1

Steven Edelman · CIK 0001683354 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 108,327

F1 · shares: This common stock was issued to the reporting person pursuant to the Issuer's non-employee director compensation policy in lieu of quarterly retainer fees. The number of shares of common stock is equal to $18,874.88 divided by $0.3771, the closing price of Issuer's common stock on the NYSE American on July 1, 2020.

SEC source: 0001209191-20-026216 · doc4.xml · nonDerivative · entry 3

NEW ENTERPRISE ASSOCIATES 10 L P · CIK 0001132326 · 10% owner

NEA PARTNERS 10 L P · CIK 0001236049 · 10% owner

SANDELL SCOTT D · CIK 0001237289 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,476,414

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.6000 to $0.6098, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (4) to this Form 4.

F2 · ownership.direct: The shares are directly held by New Enterprise Associates 10, Limited Partnership ("NEA 10") and indirectly held by NEA Partners 10, Limited Partnership ("NEA Partners 10"), the sole general partner of NEA 10, and the individual general partner of NEA Partners 10 (NEA Partners 10 and its individual general partner together, the "Indirect Reporting Persons"). The individual general partner of NEA Partners 10 is Scott D. Sandell. The NEA 10 Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 10 shares in which the NEA 10 Indirect Reporting Persons have no pecuniary interest.